Telegraph-insulator



(Model.)

0. BIGEON. Telegraph Insulator.

Patented Nov. 16, I880.

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N. PEIFRS, PHOTO LTHOGRAP UNITED STATES PATENT QEEicE.

CHARLES BIGEON, OF CINCINNATI, OHIO.

TELEGRAPH-INSULATOR.

SPECIFICATION forming part of Letters Patent No. 234,523, dated November16, 1880, Application filed August 6, 1880. (Model.)

To all whom it may concern:

Be it known that 1, CHARLES BIGEON, a citizen of the United States,residing at Oincinnati, Hamilton county, Ohio, have invented new anduseful Improvements in Telegraphic Insulators, of which the following isa specification.

My invention relates to devices for suspending electrical wires used fortelegraphic and other purposes out of electrical communication withsurrounding objects or the earth and its object is to improve theconstruction and arrangement of such devices, whereby the wires may bemore conveniently secured in or removed from their position, and theprocess of insulating and mounting continuous lines of wire greatlyfacilitated, and whereby, also, the insulator is better protected frommoisture in exposed situations.

To this end my invention consists in an insulator, of suitableinsulatingmaterial, of novel construction, and in fastening devices for securingthe same to the post or other object to which the same is to beattached.

Heretofore telegraph-insulators have been constructed of asupporting-bracket containing a tubular glass insulator provided with alongitudinal slot, said insulator being adapted to rotate for thepurpose of confining the wire in place after it is inserted through theslot, as in Letters Patent N 0. 123,198, and I therefore disclaim theconstruction shown and described in said patent.

My invention is embodied in mechanism illustrated in the accompanyingdrawings, in which Figures 1 and 2 are side elevations of my improvedinsulating device, showing the insulator proper in difl'erent positionsFig. 3, a side elevation of the two-part clamping device for securingthe insulator to the post or other object; Figs. 4. and 5, an edgeelevation and cross-section, respectively, of the insulator proper; Fig.6, an inside edge elevation of one part of the two-part clamp; Fig. 7, aside elevation of the two parts of the clamp shown separated and of theinsulator between; and Fig. 8, a perspective View of the cross-arm to beattached to a main post, showing the insulator in position complete,with wire attached.

Similar letters of reference indicate similar arts throughout thedrawings.

A in the drawings is the insulator proper, which is formed of glass,porcelain, or any other suitable insulating material, and which isconstructed substantially in the form of a L grooved pulley, having aradial slot or opening extending to or a little beyond the center.

B is the retaining device, which is substantially a short bar or stapleprovided with screw-threads and terminating in a double hook or clamp,as shown in Fig. 3, intended to partially embrace the grooved peripheryof the insulator A, leaving a space between the extremities of its arms.The clamp B is dividod longitudinally through its screw or projectingend into two similar parts, B B provided on theirjoining surfaces withdo wel pins and apertures, or other suitable means -of insuring a properfit when placed together 5 and a recess, 0, may be also provided, asshown in Fig. 3, for the insertion of a pin, 1), for a purposehereinafter explained.

O is the arm to which the insulating device is secured, and which isintended to be secured horizontally upon a post or other support. It isconstructed with sloping sides, as shown, for the purpose of giving abroader base to shed water and the better to protect the insulator whichis attached beneath. It will be apparent that this function maybe usefulwith an insulator of any description suspended beneath.

The operation is as follows: The insulator A is placed between theinclosing-arms of the fastening-clamp and the parts placed together andscrewed into the support, with the radial slot of the insulator openingbetween the ends of the fastening-arms. The wire D is then passed intothe radial opening, and the insulator A rotated until it occupies therelative position shown in Fig. 1. The insulator and its clamp togetherare then rotated one entire revolution horizontally, by which the wireis looped over the lower portion of the insulator,

and thus secured in the notch n and radial opening, as shown in Fig. 8.The pin 19 may then be inserted as a stop to prevent displacement of theinsulator A; but its use I deem unnecessary when the insulator issuspended vertically beneath its support, as in such case the weight ofthe line-wire would tend to keep it in position.

IOO

Where the insulator is attached to the top of a horizontal support or tothe side of avertical support, the pin 19 will be found of advantage inpreventing the insulator A from rotating in its bearings.

It will be observed that in putting up alinewire with this insulator itis not necessary to pass the end of the wire through the opening, aswould be the case with an ordinary perforated insulator. It is passedsidewise into the open slot, when, by simply rotating the insulator inits bearings, the wireis completely environed, and by rotatin g theretaining-clamp and insulator the wire is looped and securely held.

A circular insulator having a radial opening is shown and described inPatent No. 192,811, granted to me July 10,1877, and such, broadlyconsidered, I disclaim; but

I here claim, and desire to secure by Letters Patent 1. The combinationof the retaining device B, composed of a shank to be driven into thetelegraph-post or other support, and terminatin g at its outer portionin arms forming a double-hooked clamp, with the circular insulator A,formed in a single piece, constructed with a grooved periphery andprovided with a radial slot, said grooved periphery being partiallyembraced and wholly supported by the arms of the double-hooked clamp andadapted to rotate therein, substantially as shown and described.

2. The retaining device B, consisting of a divided shank, terminating atone end in two curved arms forming a double-hooked clamp, with a spacebetween the extremities of the arms, in combination with thecircularinsulator A, formed in a single piece, with a radial slot and a groovedperiphery, in which latter the curved arms of the divided shank arearranged and partially embrace the rotating insulator, all substantiallyas and for the purpose described.

8. In combination with a circular grooved insulator provided with aradial opening and adapted to be rotated in its clamp, the pin 19 in theclamping device for preventing rotation when in position, substantiallyas specified.

4. The retaining-clamp B in two parts, held together by insertion of itsdivided shank in a supporting object and adapted to inclose and retainan insulator, substantially as and for the purpose specified.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses,

CHARLES BIGEON.

Witnesses:

L. M HosEA, E. B. GREGG.

